« previous next »
« previous next »
 

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Large size can provide a refuge from predators. While young African elephants may be vulnerable to p Large size can provide a refuge from predators. While young African elephants may be vulnerable to p
Public setting Public setting
Large intestine. Large intestine.
Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma. Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma.
Introducing Public Administration, 8/E Introducing Public Administration, 8/E
Prime Numbers & Public Key Cryptography Prime Numbers & Public Key Cryptography
Video: How to find out if a population is evolving?

For a complete list of videos, visit our video library